I like a comment made by someone in another site :
Obviously this hack attack is the result of random bugs on the internet slowly developed over a long period of time by numerous, slight, successive modifications. Bit by bit, they became more and more adapted to attack networks and computers. This is self-evident, as any random viruses which could not hack it would be eliminated, and those that would would replicate preferentially. Unfortunately for this particular virus, it found itself on a doomed branch of the evolutionary tree, having run into an intelligent hostile force well adapted to destroy it.
That’s clever!!!